Laminated suspension spring for automobiles and other vehicles



June 2, 1925.

E.' HOUDRY LAMINATED SUSPENSION SPRING FOR AUTOMOBILES AND OTHER. VEHICLES Filed March 8, 1924- Patented June i925 retain u-Nrrsosrarss new series.

EUGENE HOUDR'Y, OF IEABIS, ll mlflfilil, ASSIGNOR TO MANUFACTURE GENERALE DE RESSOETB, F ?ARI8 IE'HANGE, A LIMITED JOINT STGCK UGMPANY OF FRANGE.

LAMINATED sosrsmsron seams-son. soromosrnzes AND OTHER vnnrcnnsf Application files arms a, was. Serial No. comes.

To aZZ whom it may concern:

Be it known that I, EUGENE Humour citizen of the Republic of hranceresiding at Paris, France, have invented certain new and useful Improvements in Laminated Suspension Springs for Automobiles and a Other Vehicles, of which the following is a specification. r i I My invention relates to various improvements in laminated springs and more particularly in springs having braking slippers.

One of the objects of the present invention is to retard the oscillation of the spring more elliciently and more gradually.

A furtherobject is to provide means whereby the friction member carried by the slipper is maintained in constant contact with the spring itself during the entire oscillatory movement of the spring. r An embodiment of the i vention is illustrated as, an example in tneaccompanying drawing, in whichz- Fig. 1 is an elevation of a-portiou er a" lam nated spring constructed in accordance with this invention. A Y

Fig. 2 is a View partly in elevation and partly in longitudinal section of the end of said spring.

Fig. 3 is a transverse section of the end v oi, the spring on the line 3--? of Fig.1.

The shock reducing spring is formed of laminations 3 held between a main. strip 4.

undo counter strip 1. i

A plate 64 supported by the strip 4 is formed of two parts 70 which are partv cyindrical and concave looking from the exterior ofthe spring; each of these parts 70 thus forms two inclines 50 inclined 1n oppo site direction to each other relatively to the main strip l; The so-called braking arrangement comprises firstly a movable stir- Top 66 sliding freely in a second stlrrup 65 fixed permanently to the counter strip. 1 by rivets 71 having bevelled heads.

a spindle 27 on which pivots a rocking lever 28 the ends of which haves; rojections 72 engaging in resilient Washer 32?, 3e and compressing these washers 1n friction casings :32; to each casing 32 is attached a lubrlcatmg cup 60 closed by a threaded stopper 61. The internal channe162'of this casing opens out on to the contact surface between the casing 32 and the raised strip 70; transverse channelsrfifi ensure regular and continuous d1s- The'niovable stirrup 66 is provided with trihution of the lubricant over the whole of this surface during the various displacements of the casings 32 relatively to the raised part 70.

The movable stirrup 66 has also a screw 67 provided with a tightening nut, theend' oi the screw being in engagement with resilient vvashers 68; these-Washers are superposed in a casing 69 mounted rigidly beheath thefixed stirrup 65.

- The spring operates in the following man-- her when the end of the. laminated spring is deformed on account of unevenness in the surface of the road assuming during its oscillation various positions as indicated in. Fig. l. The braking" slipper formed by the combination of the two casings 32 and the rocking lever 28 is displaced in alternate directions relatively to the spring asshoivn by the'arrow 55, and 111 a dlrection opposite to this arrow.

. Each casing 32 therefore comes alternately The relative displacements of the casings 32 on the inclines cause considerable friction which dampen the oscillations of the spring. v 1

Thus,' a progressive brakingof these os cillations is effected during each displacement of the slipper, either in the direction of the arrow or in the opposite direction.

lt nay also be pointed out that the casings 32 remain strongly pressed by the washers 33, 34 against the raised part 70 along their entire base surface, whatever theamplitude of the oscillating movement of the spring is; this result is rendered possible by the fact that the Wholearrangement formed by one casing 32 and two washers 33, 34 can turn frcelyrelatively to the rocking lever 28 and assume any suitable inclination relatively to this leveras is shown in Fig. 1.

To ensure the regulation of the pressure exerted by the casings 32 on the raised part 70 and consequently on the main stripe, it suffices to adjust in one or other direction said counter strip, a rocking lever pivoted.

on the said cap member, and a friction mcmher pivoted to each arm of the said rocking lever, and being in frictional contact with a. part of the spring opposite said counter Elrip.

2. in a laminated spring for the suspension of auton'iobiles and other vehicles, the combination is a main strip and a counter strip remote from said main strip, of a. fixed stirrup carried by said counter strip, a movable stirrup sliding in said fixed stirrup, means to control the sliding oi? said movable stirrup in said lined stirrup, a rocking lever pivoted on said movable stirrup, and friction members pivoted-on said rocking lever and hearing on said main strip.

3. In a laminated Spring for the suspension of auton'iol'iiles or other vehicles, the combination with a main strip and a. counter strip arranged on theside of said spring rei1o0te from said main strip, of a fixed stirrup carried by said counter strip, a movable stir rap sliding in said fixed stirrup, resilient members mounted Within said fixed stirrup,

a threaded pin screwed into said movable stirrup and compressing said resilient menu bers against said fixed stirrup, a rocking lei cr pivoted on said movable stirrup, frictime members pivoted on said rocking; lever and bearing on said main strip.

4. In a laminated spring tor the suspen sion of auton'iohiles r other vehicles, the combination with a'main strip and a counter strip, of remote from said main strip a. cap member carried by said crmnter-strip, a rocking lever pivoted on said cap member. cup casings contacting frictionally with said main strip, resilient Washers in said casings, and projecting members mounted on said lever and bearing against. said Washers.

and l'rictiomng on said main strip, and a lubricating-cup attached to said friction member having a channel discharging on to the contact curiace 0t said friction member with saidmain strip.

thin a laminated spring for the suspcn-.

sion of autoinoibiles or other vehicles, the

combination with the spring, of a part forma sharply inclined slope, a braking slipper frictionally bearing on said slop-e. and means conncctim, the said slipper with the spring, yet allowing; the slipper to be displaced relative. to the spring, and l 'ctionally hear on said slope.

T. In a laminated spring for the suspension oi automobiles and other vehicles, 7

the con'ibination with an upper spring plate having two oppositely sloping surfaces, a slipper inserted between said two slopes and adapted to friction alternately on them, and means to connect said slipper with said spring yet allowing said slipper to be displaced relatively to said springand to frictionall-y hear on said slopes. 8. In laminated spring for the suspension 01" automobiles or other vehicles, the cinnbimition of an element fol-tiling part of w'th, the spring and havingz'acylindrical surface forming two oppositely sloping surfaces, a slipper and a friction member car'- ried by said slipper and resting on said cy- 99 lindrical. surface, said member coming into contact alternately with one or other of said slo unp; sir-faces. S). In a lan'iinatial spring: for the suspension of automobiles or other vehicles the combination of a cap member carried by the sprin a rocking; lever pivoted on said cap member, having two oppositely sloping surfaces and friction members pivoted on said rocking lever and bearing on one of said 100 sloping surfaces. a

In testimony whereof I afiix my Signature.

EUGENE HOUDRY. 

